Question
A train running at 25 km/hr takes 36 seconds to pass a
platform. Next, it takes 14 seconds to pass a man walking at 7 km/hr in the same direction. Find the length of the platform.Solution
Three persons i.e. ‘P’, ‘Q’ and ‘R’, are given the same puzzle to solve. The probability that ‘P’, ‘Q’ and ‘R’ will solve the pu...
A bag has balls of three colours. It has 8 red balls, x green balls and y blue balls, If probability of picking one green ball and that of picking one b...
A box contains only three colors of balls- red, green and blue. What is the minimum number of balls that should be picked from the box to ensure that at...
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A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
Tickets numbered 1 to 50 are mixed up and then a ticket drawn at random. What is the probability that the ticket drawn bears a number which is multipl...
- A pair of dice is rolled once, what is the probability that the sum of the numbers on top is 5?
A student is required to answer 4 questions out of 12 questions in an English paper, which are divided into two sections of 6 questions each. If the stu...
If a coin is tossed 10 times then what is the probability of getting three heads?
A bag has 7 pink, 4 black and 3 yellow balls while another bag has 5 pink, 6 yellow and 3 blue balls. A bag is selected at random and a ball drawn out ...
